After you install the button cells, the tester will
go into self-test mode automatically. If the LEDs sequentially
flash once from the 12V indicator LED to the 400V indicator
LED and then all LEDs remain off, the tester passes the self-
test. If the tester does not self test or if the 12V lndicator LED
flashes five times after the self-test, the button cells are low
and must be replaced immediately.
Note:
The interval belween self-tests must be at least
about 15 secs; otherwise the tester will not self
test.
2. Before each use, a self-test has to be carried out,
and moreover, you must verity the tester’s
operation by measuring a known voltage.
If the tester operates abnormally ln the self-test
or in the voltage measurement, do not use the
tester.
How to do the self-tests
Touch the two probes together for about 3 secs, the tester
will go lnto the self-test mode. If the LEDs sequentially flash
once from the 12V lndicator LED to the 400V indicator LED
and then all LEDs remain off, the tester passes the self-test.
Note:
The interval between self-tests must be at least about
15 secs; otherwise the tester will not self test.
3. Connect the two test probes across the circuit or
source to be tested.
4. The LEDs will indlcate the voltage of the circuit or
source under test.
. If the voltage being measured is an ac voltage, both the
«+» LED and the «-» LED will light up.
. If the voltage being measured is a dc voltage, the
«+» LED will light up if the «+» test probe has
been connected to the positive terminal of the
circuit under test; and the «-» LED will light
up If the «+» test probe has been connected to the
negative terminal of the circuit.
5. If the circuit under test is without power, the tester may go
into self-test mode, and the LEDs may sequentially flash
once from the 12V indicator LED to the 400V lndicator
LED.
6. If the tester has no button cell installed, it can still
measure dc or ac voltage, but lt will not self test.
GENERAL SPECIFICATION
Voltage Range:
6V- 400V OC/AC
Frequency Range for AC Voltage Measurements
50Hz - 60Hz
Max. Test Current ( at 400V ):
is < 3.5mA ED(DT) = 30s
Operating Temperature:
-10°C~55°C
Power Supply
1.5V button cell, LR44 or equivalent, 2 pieces
IP Degree:
IP54
Measurement Category:
CAT Ill 400V
TECHNICAL SPECIFICATION
LOW BATTERY INDICATION
1. During the tester’s self test, the LEDs sequentially flash
once from the 12V lndicator LED to the 400V indicator
LED; and after that, if the 12V indicator LED flashes
five times immediately, the button cells are not high
enough and should be replaced immediately. About how
to replace the button cells, please see step 1 of
«
OPERATING INSTRUCTION
».
2. If the tester does not go into self-test mode after you
touch the two probes together for about 3 secs, the
button cells are not high enough and should be
replaced immediately.
Warning:
Remove the button cells if you does not use the tester in a
long period of time.
MAINTENANCE
Periodically wipe the case with a damp cloth and a little
mild detergent. Do not use abrasives or solvents.
To avoid short circuit or damage, do not let any liquid enter
the case.
DECLARATION
1. This Instruction Sheet is subject to change without
notice.
2. Our company will not take the other responsibilities for
any loss.
3. The contents of this instruction Sheet can not be used as
the reason to use the tester for any special application.
Voltage Range
Indication
6V/12V/24V/50V/120V/230V/400V The LEDs light up to indicate
the voltage reading.
DISPOSAL OF THIS ARTICLE
Dear Customer,
If you at some point intend to dispose of this article, then please keep in mind that many of its
components consist of valuable materials, which can be recycled.
Please do not discharge it in the garbage bin, but check with your local council for recycllng
facilities in your area.
